''Glyceria leptostachya'' is a species of mannagrass known by the common names davy mannagrass and narrow mannagrass.

Distribution

It is native to western North America from

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, where it grows in wet places such as riverbanks.

Description

This rhizomatous perennial grass produces narrow stems approaching a maximum height of 1.5 meters. The leaves may be flat or rolled along the edges and they have

ligule A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) and sedges. A ligule is also a strap-shaped extension of the corolla, such as that of a ...

s up to a centimeter long. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

is narrow and compact, bearing spikelets parallel to the stem instead of spreading outward. Each spikelet is one to two centimeters long and contains up to 14 or 15 florets with membranous margins.

References

External links

Jepson Manual Treatment

USDA Plants Profile

Photo gallery
leptostachya Freshwater plants Native grasses of California Grasses of the United States Grasses of Canada Flora of Alaska Flora of Oregon Flora of Washington (state) {{Pooideae-stub